[quote author=4B6E696F5E452F5E436D78010 link=1753237061/11#11 date=1753624003
Stick with standard velocity ammo for long range shooting. The ultra HV stuff loses velocity rapidly and becomes unstable in the transonic zone. [/quote]
I'm shooting the Norma Xtreme Long Range at 300 and 400 yards.
It has an average muzzle velocity of 1165 fps with a standard deviation of 7 according to my Garmin chronograph.
(You need to Login or Register to view media files and links) The same ammo at 300 yards.
(You need to Login or Register to view media files and links) At long range higher muzzle velocities result in less vertical spread.
At 400 yards with an MV of 1165 with a SD of 7.5 a two SD spread above and below the average MV the vertical spread due to this variation is 9.25 inches according to the "Analytics" ballistics solver from Bryan litz.
If the average MV is reduced to 1065 fps the vertical spread increases to 14.01 inches.
It is true that the higher MV does result in more horizontal drift due to the wind. At 1165 fps. a one mph change in wind speed from the right or left moves the bullet's impact 5.5 inches. At 1065 fps. the sideways movement is 5.04 inches.
High velocity 22 Long Rifles bullets do not become unstable in the transonic zone as established by McCoy and several others. This is a myth that is simply not true.